INTERNAL COMBUSTION ENGINE Russian patent published in 2017 - IPC F02M26/02 F02M26/05 F02M26/21 F02D21/08 

FIELD: engines and pumps.

SUBSTANCE: internal combustion engine contains a turbocompressor (9), an intake manifold (2) for air passing from the turbocompressor (1) to the inlet valve (5), an exhaust (7) for passing of exhaust gases from the outlet valve (6) to the turbocompressor (9) turbine (8) and a recirculation channel (10) containing a positionable damper (11) and a recirculating gas cooling heat exchanger (12). In the recirculation channel (10), a two-position damper (13) is additionally installed in front of the positioning damper (11). A two-position damper (15) is located in the recirculation channel section (14) between the positioning damper (11) and the inlet valve (5). A two-position damper (17) is located in the recirculation channel section (16), between the positioning damper (11) and the inlet (18) to the compressor (1). An additional positioning damper (20) is installed in the exhaust (7) after the turbine (8). The engine comprises a two-position damper (21) for communicating a portion of the exhaust disposed between the turbine (8) and the additional positioning damper (20) with a recirculation channel portion located between the positioning damper (11) and the two-positioning damper 13.

EFFECT: improved compactness of the engine and decreased nitrogen oxide emission.

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